Ehab Hasan Ahmed Hasan Ali, Establishing a New Simple Formula for Buckling Length Factor (K) of Rigid Frames Columns. journal = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2012, vol. 61(1). 42 - 52 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/9830.